:root {
  --jm-primary: #2d5a7b;
  --jm-primary-light: #3d7a9e;
  --jm-primary-dark: #1e3d54;
  --jm-accent: #e8a87c;
  --jm-accent-light: #f0bc96;
  --jm-gold: #f4d35e;
  --jm-bg: #f7f9fb;
  --jm-bg-alt: #eef2f6;
  --jm-card: #ffffff;
  --jm-card-hover: #fafcfd;
  --jm-text: #1a2b3c;
  --jm-text-secondary: #4a5f72;
  --jm-text-muted: #7a8fa3;
  --jm-border: #dce4ec;
  --jm-shadow: 0 4px 20px rgba(45, 90, 123, 0.08);
  --jm-shadow-lg: 0 12px 40px rgba(45, 90, 123, 0.12);
  --jm-shadow-hover: 0 8px 30px rgba(45, 90, 123, 0.16);
  --jm-radius: 16px;
  --jm-radius-sm: 10px;
  --jm-radius-lg: 24px;
  --jm-glass: rgba(255, 255, 255, 0.72);
  --jm-glass-border: rgba(255, 255, 255, 0.4);
  --jm-gradient: linear-gradient(135deg, #2d5a7b 0%, #3d7a9e 40%, #5a9ec4 70%, #e8a87c 100%);
  --jm-gradient-soft: linear-gradient(135deg, rgba(45, 90, 123, 0.06) 0%, rgba(232, 168, 124, 0.06) 100%);
  --jm-gradient-accent: linear-gradient(135deg, #e8a87c 0%, #f4d35e 100%);
  --jm-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --jm-transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --jm-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --jm-max-width: 1200px;
  --jm-header-height: 72px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --jm-bg: #0f1923;
    --jm-bg-alt: #162230;
    --jm-card: #1a2b3c;
    --jm-card-hover: #1f3347;
    --jm-text: #e8edf2;
    --jm-text-secondary: #b0c0d0;
    --jm-text-muted: #7a8fa3;
    --jm-border: #2a3f54;
    --jm-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --jm-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
    --jm-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
    --jm-glass: rgba(26, 43, 60, 0.75);
    --jm-glass-border: rgba(255, 255, 255, 0.08);
    --jm-gradient-soft: linear-gradient(135deg, rgba(45, 90, 123, 0.15) 0%, rgba(232, 168, 124, 0.1) 100%);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--jm-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--jm-text);
  background-color: var(--jm-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--jm-transition), color var(--jm-transition);
}

img,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--jm-primary);
  text-decoration: none;
  transition: color var(--jm-transition), opacity var(--jm-transition);
}

a:hover {
  color: var(--jm-accent);
}

a:focus-visible {
  outline: 2px solid var(--jm-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--jm-text);
  transition: color var(--jm-transition);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: -0.01em;
  position: relative;
  padding-bottom: 0.6em;
  margin-bottom: 1.2em;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  border-radius: 2px;
  background: var(--jm-gradient-accent);
  transition: width var(--jm-transition-slow);
}

section:hover > h2::after {
  width: 100px;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  margin-bottom: 0.6em;
  color: var(--jm-primary);
}

@media (prefers-color-scheme: dark) {
  h3 {
    color: var(--jm-primary-light);
  }
}

p {
  margin-bottom: 1em;
  color: var(--jm-text-secondary);
}

strong {
  color: var(--jm-text);
  font-weight: 600;
}

/* ===== Header / Navigation ===== */
header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--jm-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--jm-glass-border);
  transition: background var(--jm-transition), box-shadow var(--jm-transition);
}

header[role="banner"]:hover {
  box-shadow: var(--jm-shadow);
}

header nav[aria-label="主导航"] {
  max-width: var(--jm-max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 20px;
  min-height: var(--jm-header-height);
}

header nav[aria-label="主导航"] > a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--jm-text-secondary);
  padding: 6px 4px;
  position: relative;
  white-space: nowrap;
  transition: color var(--jm-transition);
}

header nav[aria-label="主导航"] > a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--jm-gradient-accent);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: width var(--jm-transition);
}

header nav[aria-label="主导航"] > a:hover {
  color: var(--jm-primary);
}

header nav[aria-label="主导航"] > a:hover::after {
  width: 100%;
}

header nav form[role="search"] {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

header nav form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

header nav form[role="search"] input[type="search"] {
  width: 200px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-family: var(--jm-font);
  color: var(--jm-text);
  background: var(--jm-bg-alt);
  border: 1px solid var(--jm-border);
  border-radius: 999px;
  outline: none;
  transition: all var(--jm-transition);
}

header nav form[role="search"] input[type="search"]::placeholder {
  color: var(--jm-text-muted);
}

header nav form[role="search"] input[type="search"]:focus {
  width: 260px;
  border-color: var(--jm-primary);
  box-shadow: 0 0 0 3px rgba(45, 90, 123, 0.12);
  background: var(--jm-card);
}

header nav form[role="search"] button {
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--jm-font);
  color: #fff;
  background: var(--jm-primary);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--jm-transition);
}

header nav form[role="search"] button:hover {
  background: var(--jm-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45, 90, 123, 0.3);
}

header nav form[role="search"] button:active {
  transform: translateY(0);
}

/* ===== Main Layout ===== */
main {
  max-width: var(--jm-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main > section {
  padding: 64px 0;
  animation: jmFadeUp 0.7s ease-out both;
}

main > section:nth-child(even) {
  animation-delay: 0.05s;
}

@keyframes jmFadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@supports (animation-timeline: view()) {
  main > section {
    animation: jmFadeUp linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}

/* ===== Hero Section ===== */
#hero {
  position: relative;
  margin: 32px 0 0;
  padding: 80px 48px;
  border-radius: var(--jm-radius-lg);
  background: var(--jm-gradient);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--jm-shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(244, 211, 94, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 85% 75%, rgba(232, 168, 124, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
  animation: jmFloat 8s ease-in-out infinite;
}

@keyframes jmFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 20px) scale(1.05); }
}

#hero h1 {
  position: relative;
  z-index: 1;
  color: #fff;
  margin-bottom: 0.6em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

#hero > p {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.92);
  max-width: 720px;
  font-size: 1.05rem;
  margin-bottom: 0.8em;
}

#hero figure {
  position: relative;
  z-index: 1;
  margin-top: 40px;
  border-radius: var(--jm-radius);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: transform var(--jm-transition), box-shadow var(--jm-transition);
}

#hero figure:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

#hero figure svg {
  width: 100%;
  height: auto;
  display: block;
}

#hero figcaption {
  padding: 12px 20px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== Breadcrumb ===== */
nav[aria-label="面包屑导航"] {
  padding: 20px 0;
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
}

nav[aria-label="面包屑导航"] ol li {
  color: var(--jm-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

nav[aria-label="面包屑导航"] ol li + li::before {
  content: "›";
  color: var(--jm-text-muted);
  font-size: 1.1em;
}

nav[aria-label="面包屑导航"] ol li a {
  color: var(--jm-text-secondary);
}

nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--jm-primary);
}

/* ===== Cards / Content Blocks ===== */
#about,
#products,
#solutions,
#applications,
#cases,
#news,
#articles,
#howto,
#faq,
#contact,
#sitemap,
#links {
  scroll-margin-top: calc(var(--jm-header-height) + 16px);
}

#about h3,
#products h3,
#solutions h3,
#applications h3,
#cases h3,
#howto h3 {
  margin-top: 1.8em;
  padding-left: 16px;
  border-left: 4px solid var(--jm-accent);
  transition: border-color var(--jm-transition), padding-left var(--jm-transition);
}

#about h3:hover,
#products h3:hover,
#solutions h3:hover,
#applications h3:hover,
#cases h3:hover,
#howto h3:hover {
  border-left-color: var(--jm-gold);
  padding-left: 22px;
}

#about ul,
#products ul,
#howto ul,
#howto ol {
  margin: 0.8em 0 1.2em;
  padding-left: 0;
}

#about ul li,
#products ul li,
#howto ul li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--jm-text-secondary);
  transition: color var(--jm-transition), transform var(--jm-transition);
}

#about ul li::before,
#products ul li::before,
#howto ul li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--jm-gradient-accent);
  transition: transform var(--jm-transition), box-shadow var(--jm-transition);
}

#about ul li:hover,
#products ul li:hover,
#howto ul li:hover {
  color: var(--jm-text);
  transform: translateX(4px);
}

#about ul li:hover::before,
#products ul li:hover::before,
#howto ul li:hover::before {
  transform: scale(1.4);
  box-shadow: 0 0 0 4px rgba(232, 168, 124, 0.2);
}

#howto ol {
  counter-reset: jm-step;
}

#howto ol li {
  position: relative;
  padding: 12px 0 12px 48px;
  color: var(--jm-text-secondary);
  counter-increment: jm-step;
  transition: color var(--jm-transition), transform var(--jm-transition);
}

#howto ol li::before {
  content: counter(jm-step);
  position: absolute;
  left: 0;
  top: 10px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--jm-gradient);
  border-radius: 50%;
  transition: transform var(--jm-transition), box-shadow var(--jm-transition);
}

#howto ol li:hover {
  color: var(--jm-text);
  transform: translateX(4px);
}

#howto ol li:hover::before {
  transform: scale(1.15);
  box-shadow: 0 4px 14px rgba(45, 90, 123, 0.35);
}

/* ===== News & Articles Cards ===== */
#news article,
#articles article {
  padding: 24px 28px;
  margin-bottom: 16px;
  background: var(--jm-card);
  border-radius: var(--jm-radius);
  border: 1px solid var(--jm-border);
  box-shadow: var(--jm-shadow);
  transition: transform var(--jm-transition), box-shadow var(--jm-transition),
    border-color var(--jm-transition), background var(--jm-transition);
  position: relative;
  overflow: hidden;
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--jm-gradient-accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--jm-transition);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--jm-shadow-hover);
  border-color: var(--jm-accent);
  background: var(--jm-card-hover);
}

#news article:hover::before,
#articles article:hover::before {
  transform: scaleY(1);
}

#news article h3,
#articles article h3 {
  margin-top: 0;
  padding-left: 0;
  border-left: none;
  font-size: 1.15rem;
}

#news article h3 a,
#articles article h3 a {
  color: var(--jm-text);
  transition: color var(--jm-transition);
}

#news article h3 a:hover,
#articles article h3 a:hover {
  color: var(--jm-primary);
}

#news article time,
#articles article time {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--jm-text-muted);
  margin-bottom: 8px;
  padding: 2px 10px;
  background: var(--jm-bg-alt);
  border-radius: 999px;
  transition: background var(--jm-transition), color var(--jm-transition);
}

#news article:hover time,
#articles article:hover time {
  background: rgba(232, 168, 124, 0.15);
  color: var(--jm-accent);
}

/* ===== Blockquote ===== */
blockquote {
  position: relative;
  margin: 20px 0;
  padding: 24px 28px 24px 56px;
  background: var(--jm-gradient-soft);
  border-radius: var(--jm-radius);
  border-left: 4px solid var(--jm-accent);
  transition: transform var(--jm-transition), box-shadow var(--jm-transition);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 8px;
  font-size: 3rem;
  line-height: 1;
  color: var(--jm-accent);
  opacity: 0.5;
  font-family: Georgia, serif;
}

blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--jm-shadow);
}

blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--jm-text-secondary);
}

/* ===== FAQ Details ===== */
#faq details {
  margin-bottom: 12px;
  background: var(--jm-card);
  border-radius: var(--jm-radius-sm);
  border: 1px solid var(--jm-border);
  box-shadow: var(--jm-shadow);
  overflow: hidden;
  transition: box-shadow var(--jm-transition), border-color var(--jm-transition),
    transform var(--jm-transition);
}

#faq details:hover {
  box-shadow: var(--jm-shadow-hover);
  border-color: var(--jm-accent);
}

#faq details[open] {
  border-color: var(--jm-primary);
  box-shadow: var(--jm-shadow-lg);
}

#faq summary {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--jm-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 48px;
  transition: color var(--jm-transition), background var(--jm-transition);
  user-select: none;
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::after {
  content: "+";
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--jm-primary);
  transition: transform var(--jm-transition), color var(--jm-transition);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  color: var(--jm-accent);
}

#faq summary:hover {
  background: var(--jm-bg-alt);
  color: var(--jm-primary);
}

#faq details > p {
  padding: 0 24px 20px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--jm-text-secondary);
  animation: jmSlideDown 0.3s ease-out;
}

@keyframes jmSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Contact / Address ===== */
#contact address {
  font-style: normal;
  padding: 28px 32px;
  background: var(--jm-card);
  border-radius: var(--jm-radius);
  border: 1px solid var(--jm-border);
  box-shadow: var(--jm-shadow);
  transition: box-shadow var(--jm-transition), transform var(--jm-transition);
}

#contact address:hover {
  box-shadow: var(--jm-shadow-hover);
  transform: translateY(-2px);
}

#contact address p {
  margin-bottom: 0.6em;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

#contact address p:last-child {
  margin-bottom: 0;
}

#contact address a {
  font-weight: 500;
  position: relative;
}

#contact address a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--jm-accent);
  transition: width var(--jm-transition);
}

#contact address a:hover::after {
  width: 100%;
}

/* ===== Sitemap ===== */
#sitemap nav ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px 24px;
}

#sitemap nav ul li {
  padding: 6px 0;
}

#sitemap nav ul li > a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--jm-text);
  transition: color var(--jm-transition), padding-left var(--jm-transition);
}

#sitemap nav ul li > a:hover {
  color: var(--jm-primary);
  padding-left: 6px;
}

#sitemap nav ul li ul {
  margin-top: 6px;
  padding-left: 12px;
  border-left: 2px solid var(--jm-border);
  transition: border-color var(--jm-transition);
}

#sitemap nav ul li:hover ul {
  border-left-color: var(--jm-accent);
}

#sitemap nav ul li ul li a {
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--jm-text-secondary);
}

#sitemap nav ul li ul li a:hover {
  color: var(--jm-accent);
}

/* ===== Links ===== */
#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

#links ul li a {
  display: inline-block;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--jm-text-secondary);
  background: var(--jm-card);
  border: 1px solid var(--jm-border);
  border-radius: 999px;
  transition: all var(--jm-transition);
}

#links ul li a:hover {
  color: #fff;
  background: var(--jm-primary);
  border-color: var(--jm-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(45, 90, 123, 0.3);
}

/* ===== Footer ===== */
footer[role="contentinfo"] {
  margin-top: 80px;
  padding: 56px 24px 32px;
  background: var(--jm-bg-alt);
  border-top: 1px solid var(--jm-border);
  transition: background var(--jm-transition), border-color var(--jm-transition);
}

footer[role="contentinfo"] > section {
  max-width: var(--jm-max-width);
  margin: 0 auto 32px;
}

footer[role="contentinfo"] h2 {
  font-size: 1.05rem;
  margin-bottom: 0.8em;
  padding-bottom: 0.4em;
  color: var(--jm-text);
}

footer[role="contentinfo"] h2::after {
  width: 32px;
  height: 3px;
}

footer[role="contentinfo"] p {
  font-size: 0.875rem;
  color: var(--jm-text-muted);
  max-width: 720px;
}

footer[role="contentinfo"] address {
  font-style: normal;
}

footer[role="contentinfo"] address p {
  margin-bottom: 0.4em;
}

footer[role="contentinfo"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

footer[role="contentinfo"] ul li a {
  font-size: 0.875rem;
  color: var(--jm-text-secondary);
  transition: color var(--jm-transition), transform var(--jm-transition);
  display: inline-block;
}

footer[role="contentinfo"] ul li a:hover {
  color: var(--jm-primary);
  transform: translateX(3px);
}

footer[role="contentinfo"] > p small {
  display: block;
  max-width: var(--jm-max-width);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--jm-border);
  font-size: 0.8rem;
  color: var(--jm-text-muted);
  text-align: center;
}

/* ===== Glassmorphism accent ===== */
#hero figure,
header[role="banner"],
#contact address {
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--jm-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--jm-border);
  border-radius: 5px;
  border: 2px solid var(--jm-bg-alt);
  transition: background var(--jm-transition);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--jm-primary-light);
}

/* ===== Selection ===== */
::selection {
  background: rgba(232, 168, 124, 0.3);
  color: var(--jm-text);
}

/* ===== Responsive: Tablet ===== */
@media (max-width: 900px) {
  main {
    padding: 0 20px;
  }

  #hero {
    padding: 60px 32px;
  }

  main > section {
    padding: 48px 0;
  }

  header nav[aria-label="主导航"] {
    padding: 0 20px;
    gap: 6px 14px;
  }

  header nav form[role="search"] input[type="search"] {
    width: 160px;
  }

  header nav form[role="search"] input[type="search"]:focus {
    width: 200px;
  }
}

/* ===== Responsive: Mobile ===== */
@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  main {
    padding: 0 16px;
  }

  #hero {
    margin: 16px 0 0;
    padding: 40px 24px;
    border-radius: var(--jm-radius);
  }

  #hero > p {
    font-size: 0.95rem;
  }

  #hero figure {
    margin-top: 24px;
  }

  main > section {
    padding: 36px 0;
  }

  h2 {
    padding-bottom: 0.5em;
    margin-bottom: 1em;
  }

  h2::after {
    width: 40px;
    height: 3px;
  }

  header nav[aria-label="主导航"] {
    padding: 8px 16px;
    gap: 4px 10px;
    min-height: auto;
  }

  header nav[aria-label="主导航"] > a {
    font-size: 0.8rem;
    padding: 4px 2px;
  }

  header nav form[role="search"] {
    width: 100%;
    margin-left: 0;
    margin-top: 4px;
    order: 10;
  }

  header nav form[role="search"] input[type="search"] {
    flex: 1;
    width: auto;
    min-width: 0;
  }

  header nav form[role="search"] input[type="search"]:focus {
    width: auto;
  }

  #news article,
  #articles article {
    padding: 20px;
  }

  #news article h3,
  #articles article h3 {
    font-size: 1rem;
  }

  #faq summary {
    padding: 14px 18px;
    padding-right: 42px;
    font-size: 0.9rem;
  }

  #faq summary::after {
    right: 18px;
  }

  #faq details > p {
    padding: 0 18px 16px;
    font-size: 0.85rem;
  }

  #contact address {
    padding: 20px 22px;
  }

  #sitemap nav ul {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px 16px;
  }

  blockquote {
    padding: 20px 20px 20px 48px;
  }

  blockquote::before {
    left: 14px;
    font-size: 2.4rem;
  }

  footer[role="contentinfo"] {
    padding: 40px 16px 24px;
    margin-top: 56px;
  }

  #howto ol li {
    padding-left: 42px;
  }

  #howto ol li::before {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
  }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== Print ===== */
@media print {
  header[role="banner"],
  footer[role="contentinfo"],
  #links,
  #sitemap {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  main > section {
    padding: 16px 0;
    animation: none;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}